Laser device, ignition device, and internal combustion engine

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	Laser device, ignition device, and internal combustion engine
其他题名	Laser device, ignition device, and internal combustion engine
	IKEOH, TOSHIYUKI; HAGITA, KENTAROH; JIKUTANI, NAOTO; HIGASHI, YASUHIRO; IZUMIYA, KAZUMA
	2018-10-10
专利权人	RICOH COMPANY, LTD.
公开日期	2018-10-10
授权国家	欧洲专利局
专利类型	发明申请
摘要	A laser device includes a surface emitting laser array, a first light condensing optical system, an optical fiber, a second light condensing optical system, and a laser cavity. The light from the surface emitting laser array enters the laser cavity via the first light condensing optical system, the optical fiber, and the second light condensing optical system. The laser cavity is a Q-switched laser and includes a laser medium and a saturable absorber. A beam waist diameter r of the light (excitation light) that irradiates the laser cavity, is set so that the beam waist diameter r and an initial transmittance T0 of the saturable absorber satisfy a relationship of 7.75×T04-7.77×T03+3.13×T02+0.16×T0+0.74≤r≤2.62×T0+0.675.
其他摘要	激光装置包括表面发射激光器阵列，第一聚光光学系统，光纤，第二聚光光学系统和激光腔。来自表面发射激光器阵列的光经由第一聚光光学系统，光纤和第二聚光光学系统进入激光腔。激光腔是Q开关激光器，包括激光介质和可饱和吸收器。设定照射激光腔的光（激发光）的束腰直径r，使得束腰直径r和可饱和吸收体的初始透射率T0满足7.75×T04-7.77×T03 + 3.13×的关系。 T02 + 0.16×T0 +0.74≤r≤2.62×T0 + 0.675。
主权项	A laser device comprising: a light source device including a semiconductor laser; and a laser cavity irradiated with light from the light source device and including a saturable absorber, wherein a beam waist diameter r of the light that irradiates the laser cavity and an initial transmittance T 0 of the saturable absorber satisfy a relationship of 7.75×T 0 4-7.77×T 0 3+3.13×T 0 2+0.16×T 0+0.74≤r≤2.62×T 0+0.675.
申请日期	2016-11-30
专利号	EP3386041A1
专利状态	申请中
申请号	EP2016870715
公开（公告）号	EP3386041A1
IPC 分类号	H01S3/113 \| F02P23/04 \| H01S3/00 \| H01S3/0941 \| H01S5/42
专利代理人	-
代理机构	J A KEMP
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/62221
专题	半导体激光器专利数据库
作者单位	RICOH COMPANY, LTD.
推荐引用方式 GB/T 7714	IKEOH, TOSHIYUKI,HAGITA, KENTAROH,JIKUTANI, NAOTO,et al. Laser device, ignition device, and internal combustion engine. EP3386041A1[P]. 2018-10-10.